import Vue from 'vue'
import VueRouter from 'vue-router'

import Login from '@/components/Login.vue'
import Home from '@/components/Home.vue'
import Welcome from '@/components/Welcome.vue'
import Users from '@/components/user/Users.vue'
import Rights from '@/components/power/Rights.vue'
import Roles from '@/components/power/Roles.vue'
import Cate from '@/components/goods/Cate.vue'
import Params from '@/components/goods/Params.vue'
import List from '@/components/goods/List.vue'
import Add from '@/components/goods/Add.vue'
import Order from '@/components/order/Order.vue'
import Report from '@/components/report/Report.vue'

Vue.use(VueRouter)

const router = new VueRouter({
  routes: [
    { path: '/', redirect: '/login' },//这里是重定向的作用，如果是斜杠直接定义到login界面
    { path: '/login', component: Login },
    {
      path: '/home', component: Home,
      redirect: '/welcome',
      children: [
        { path: '/welcome', component: Welcome },
        { path: '/users', component: Users },
        { path: '/rights', component: Rights },
        { path: '/roles', component: Roles },
        { path: '/categories', component: Cate },
        { path: '/params', component: Params },
        { path: '/goods', component: List },
        { path: '/goods/add', component: Add },
        { path: '/orders', component: Order },
        { path: '/reports', component: Report }
      ]

    }
  ]
})
//挂在路由导航守卫
router.beforeEach((to, from, next) => {
  // next()放行， next('/login')强制要跳转的路径
  if (to.path === '/login') return next();
  //获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login');// !tokenStr 表示这个值不存在，证明没有登录，既然没有登录，强制跳转登录页就好
  next() //存在直接放行
})












export default router
